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| author |  Jiri Pirko <jiri@resnulli.us>
| 2013-01-24 09:41:41 +0000 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2013-01-29 13:59:57 -0500 |
| commit | 5c766d642bcaffd0c2a5b354db2068515b3846cf (patch) | |
| tree | f5bb2ed37d70c79304c17911de77779ea92c1041 /net/ipv6/addrconf.c | |
| parent | Merge branch 'ipfrags' (diff) | |
| download | linux-5c766d642bcaffd0c2a5b354db2068515b3846cf.tar.gz linux-5c766d642bcaffd0c2a5b354db2068515b3846cf.tar.bz2 linux-5c766d642bcaffd0c2a5b354db2068515b3846cf.zip | |
ipv4: introduce address lifetime
There are some usecase when lifetime of ipv4 addresses might be helpful.
For example:
1) initramfs networkmanager uses a DHCP daemon to learn network
configuration parameters
2) initramfs networkmanager addresses, routes and DNS configuration
3) initramfs networkmanager is requested to stop
4) initramfs networkmanager stops all daemons including dhclient
5) there are addresses and routes configured but no daemon running. If
the system doesn't start networkmanager for some reason, addresses and
routes will be used forever, which violates RFC 2131.
This patch is essentially a backport of ivp6 address lifetime mechanism
for ipv4 addresses.
Current "ip" tool supports this without any patch (since it does not
distinguish between ipv4 and ipv6 addresses in this perspective.
Also, this should be back-compatible with all current netlink users.
Reported-by: Pavel Šimerda <psimerda@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/addrconf.c')
| -rw-r--r-- | net/ipv6/addrconf.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 80d59802d964..7f7332b44699 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -110,10 +110,6 @@ static inline u32 cstamp_delta(unsigned long cstamp) return (cstamp - INITIAL_JIFFIES) * 100UL / HZ; } -#define ADDRCONF_TIMER_FUZZ_MINUS (HZ > 50 ? HZ/50 : 1) -#define ADDRCONF_TIMER_FUZZ (HZ / 4) -#define ADDRCONF_TIMER_FUZZ_MAX (HZ) - #ifdef CONFIG_SYSCTL static void addrconf_sysctl_register(struct inet6_dev *idev); static void addrconf_sysctl_unregister(struct inet6_dev *idev); |